hallberg



No. 750,453. 7 PATENTED JAN.,26, 1904.

E. J. HALLBERG.

PAPER FEEDING MACHINE.

, APPLICATION rum) JULY 8. 1901. no MODEL. 3 SHEETS-SHEET 1,

No; 750,453. PATENTED JAN. 26, 1904.

E. J. HALLBERG.

PAPER FEEDING MACHINE.

APPLICATION FILED JULY 81 1901.

N0 MODEL. 3 SHEETSSHEET 2- 0761239737 ,Z7we/zZ5/1 m: mums PETERS co.,mo'rauma, wAsHms'mN, n c.

ERNST JULIUS HALLBERG,

Patented January 26, 1904.

PATENT OFFIC OF STOCKHOLM, SWEDEN.

PAPER-FEEDING MACHINE.

SPECIFICATION forming part of Letters Patent N0. 750,453, dated anuary26, 1904.

Application filed July 8, 1901. Serial No- 67,521. (No model.)

To all whom it may concern.-

Be it known that I, ERNST JULIUS HALL- BERG, printer, a subject of theKing of Sweden and Norway, and a resident of David Bagares gata No. 5,Stockholm, in the Kingdom of Sweden, have invented certain new and use-"ful Improvements in or Relating to Paper- Feeding Machines, of which thefollowing is a specification, reference being made to the accompanyingdrawings.

The present invention relates to improve ments in paper-feedingmachines; and it consists of a device the principal parts of which arelocated above the pile of paper placed on the machine-table, the saiddevice having for its purpose partly to feed one sheet after another, sothat there will be a stop in the feeding action between each sheet andpartly that that part of the device which causes the stoppage or halt inthe feeding simultaneously 7 may serve as a means to withhold all thesheets in plan.

in the pile except the top one, which alone is intended to be thenremoved from the pile.

A device constructed according to this invention is shown in theaccompanying drawmgs.

Figures 1 and 2 show the device in side elevation in twodifierentpositions, and Fig. 3 Fig. 4 is a detail view of a modified form ofpresser-foot. Figs. 5, 6, and 7 are respectively a side elevation, afront elevation, and a plan view, on a larger scale, of the presserdevice shown in Figs. 1 to 3.

1 is the machinetable, upon which is placed, as indicated in Figs. 1 and2, the paper to be fed forward. At the rear part of the table isjournaled a shaft 2, provided at a suitable place with a step-pulley orthe like, by means of which the shaft is rotated. At about the .middleof the width of the table the shaft 2 passes through one pivot of aframing-piece 3, which is journaled in and carried by a hearing 4 andwhich is provided with two rods or bars 5 and 6, between the forwardends of which is journaled a friction-wheel 7 for the feeding of thepaper. Within theframingpiece and on the end of the shaft 2 is fixed arope or belt pulley 8, while a corresponding pulley 9 is carried on theshaft of the wheel 7, which is in this way rotated. In order to regulatethe pressure of the wheel against the paper to be fed forward, and thusalso the feeding velocity, the weight of the Wheel and the partsbelonging thereto are balanced by an adjustable counterweight 10, (or anadjustable spring,) attached to a rod 11, which by means of a joint isconnected to the framing-piece on the opposite side of the feedwheel andrests against a lug 12, (see Fig. 3,) projecting from the same.

The shaft of the feed-wheel 7 carries two arms 13 and 14, the nave ofwhich is loosely mounted on the shaft. The end of the arm 13, the upperone, is by means of a joint connected to a rod 15, the other end ofwhich is in a similar way connected to a fixed arm 16, projecting fromthe bearing' l. The length of the rod 15 is equal to the length of therod 5, while the lengths of the arms 13 and 16 are alike,so that theserods and arms form together a parallelogram. From the end of the arm 14:projects backward a bar 17, the direction of which is about parallel tothe surface of the machine-table, and the rear end of which is carriedby a rod 18, connected to the arm 13. To the bar 17 is movably attacheda frame or support 19, which may be adjusted and fixed at a desiredpoint along the bar 17 and which carries a slide 20 with a presser-foot21, acted upon by a spring 22, the tension of which tends to press thefoot upon the pile of paper. The frame 19 carries besides a bell-cranklever 23, pivotally connected to the same and having its one arm in gearwith the slide 20, while its other arm is adjustably connected with alever-arm 24, attached to a shaft 25, which is journaled at the rearpart of the machine. By means of an arm 26 and rod 27 (see Fig. 3) thisshaft is in connection with the feed-regulating mechanism, which may beof any suitable construction (for instance, like the one forming theobject of my application, Serial No. 67,523, filed simultaneously withthis application) and which is so designed that some suitable part ofthe mechanism is released or readjusted when the front edge of theadvanced sheet has reached a certain point. If thus during the workingof the machine the parts of the device in question are in the positionsshown in Fig. 1that is to say, the rotatingwheel 7 in contact with thepaper and the presser-foot 21 raised by the bell-cranklever 23*son1e ofthe upper sheets being then fanned out, the spring 22 stretched, and themechanism in locked position, this fanning out will continue until thefront edge of the uppermost sheet has reached the said point for thereadjustment of the mechanism; but as soon as this readjustment takesplace the resistance will give way, (in consequence of the rod 27 beingin connection with said mechanism,) whereby the spring 22 has been keptstretched, the presser-foot 21 being thus moved down upon the paper bythe spring. As, however, the feed-wheel 7 and parts belonging theretoare balanced by the counterweight 10, so that it rests against the paperwith only a slight pressure, and the power of the spring, moreover, isin excess of the amount of that pressure, the wheel will be lifted fromand be brought out of contact with the paper as the presser-foot islowered. As, further, all the sheets in the pile are of the same lengthin the feed direction and the front edge, and thus also the rear edge ofeach sheet always is at a determined point at the moment of thereadjustment of the mechanism, while the support 19 may be fixed at adesired place on the bar 17, it is evident that the said support may beso placed that the presser-foot when descending against the paper willalways strike just behind the rear edge of the uppermost sheet. In Fig.1 is shown the position of the parts just before the readjustment of themechanism, and in Fig. 2 when the same is readjusted. In thelast-mentioned figure is clearly shown the disengaged state of theuppermost sheet, while the second sheet and those beneath are retainedby the presser-foot.

Owing to the fact that the entire drawingout apparatus is carried onlyby the framingvpiece 3, which is journaled in its bearing-support 1, thewhole apparatus may be raised in the position shown in dotted lines inFig. 1, thus allowing a new pile of paper to be placed on themachine-table. In order that the counterweight may not prevent suchraising,its rod 11, as above mentioned, is connected to theframing-piece by means of a joint, so that the counterweight need notparticipate in the rotating motion of the framing-piece round itspivots. When the wheel has been raised a certain distance,thecounterweight will be supported by a bracket 28, placed underneath thesame and rest thereon during the continued raising of the apparatus, asclearly shown in Fig. 1. In its raised position the apparatus isprevented from turning over to the opposite side by a projection 29 (seeFigs. 1 and 2) on the bearing 4, against which the framing-piece rests.On account of the rods and arms which carry and hold the bar 17 in itsposition being arranged in the form of a parallelogram with the arm 16fixed it is evident that the bar during the raising of the apparatuswill move parallel with itself, which has the great advantage that thebar during the drawing out of the paper will be until the last sheetparallel to the position it had at the commencement of the operation.

During the drawing-out operation the wheel 7 is intended to work justabove the central line of the paper, and might for this reason beadjustably mounted on its shaft. In case any sheet, nevertheless, shouldshow a tendency to move obliquely during the operation there is arrangedon either side of the pile a rule or guide 30, which is adjustably fixedon the table and by being placed against the side of the pile forms aguide for the sheet during the drawing or feeding out of the same.

It is evident that several drawing-out apparatus placed symmetricallyabove the pile may be used simultaneously.

With regard to the retaining device it will be easily understood thatthe up-and-down movable rod, with its presser-foot 21, can be dispensedwith if the fulcrum of the bellcrank-lever 23 is placed sufficientlynear the paper, and the forward arm of the same is at its end providedwith asuitable contact surface or device (see Fig. 4) which when loweredwill press upon the paper. In this case the spring will be connectedwith the lever, and a pin 31 will be fixed at a suitable place in thesupport to limit the movement of the lever.

Having now described my invention,what I claim as new, and desire tosecure by Letters Patent, is

1. An apparatus for feeding single sheets of paper from a pilecomprising a frame movable toward and from the pile, a suitable. feedingdevice carried thereby, a presser device carried by said frame in rearof said feeding device, a spring tending to force saidpresser device incontact with the pile of sheets and simultaneously raise the frame andfeeding device, and means for holding said presser device raised againstthe tension of the spring, substantially as described. a

2. An apparatus for feeding single sheets of paper from a pile,comprising a frame movable toward and from the pile, a feed devicecarried thereby, a presser device adjustably carried by said frame, aspring tending to force said presser device in contact with the pile andthereby raise the feed device from the pile, and means for holding saidpresser device out of contact with the pile against the tension of thespring, substantially as described.

3. In combination, a pivoted supportingframe, a feeding device mountedthereon with means for operating it, a second frame carried by thepivoted support and adjustable toward and from the feed device, aspring-pressed presser device carried by said frame, and means forholding said presser device elevated until a sheet has been fed frombeneath the presser device, substantially as described.

4. In combination, a pivoted supportingframe, afeed device carriedthereby, a bar supported from the frame, means wherebysaid bar ismaintained in a horizontal position without regard to its elevation, aframe adjustably mounted on said bar, a presser device carried by saidframe and means-for lowering said presser device into contact with thepile and simultaneously raising the feed device, substantially asdescribed. 7

5. In combination, the pivoted frame or support, a feed device carriedthereby, a twoarmed lever carried by said frame, a bar having its endslinked to said two-armed lever, a connection from said two-armed leverto a stationary part of the device, a frame adjustably carried by saidbar, a presser device movably carried by said frame, and means foroperating said presser device, substantially as described.

6. In combination, a pivoted frameor support, a counterbalance therefor,a jointed connection between said counterbalance and frame permittingraising of the frame, a feed device carried by the frame, a presserdevice carried by the frame in rear of the feed device and means wherebythe presser device may be lowered into contact with the pile and thefeed device raised on the feeding of the topmost sheet, substantially asdescribed.

7. In combination, a vertically movable frame or support, a feed devicecarried thereby, a vertically-movable presser device supported by saidframe, a spring tending to force the presser device down into contactwith the pile of paper and elevate the frame, a bell-crank lever havingone arm engaging said presser device and connections to the other armfor holding the presser device elevated against the tension of thespring, substantially as described.

In Witness whereof Ihave hereunto set my hand in presence of twowitnesses.

ERNST JULIUS HALLBERG.

Witnesses:

CARL TH. SUNDHoLM, HANS B- OHESSON.

